Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Morristown Airport (KMMU)

Lat: 40.8°NLon: 74.42°WElev: 187ft.

Mostly Cloudy

68°F

20°C

Humidity 73%
Wind Speed S 3 mph
Barometer 29.85 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 17 Jun 8:45 am EDT
Extended Forecast for

Whippany NJ

  • Today

    Today: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 81. Light south wind increasing to 5 to 10 mph in the morning.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Mostly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm.  Patchy fog after 2am.  Otherwise, increasing clouds, with a low around 64. Southeast wind around 5 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    Showers then
    Patchy Fog

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 4pm.  Patchy fog before 7am.  Otherwise, cloudy through mid morning, then gradual clearing, with a high near 89. South wind 10 to 15 mph, with gusts as high as 35 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. West wind around 10 mph, with gusts as high as 25 mph.

    Low: 65 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 83. West wind around 10 mph, with gusts as high as 20 mph.

    High: 83 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 81. Light south wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 8pm. Patchy fog after 2am. Otherwise, increasing clouds, with a low around 64. Southeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and thunderstorms likely, mainly before 4pm. Patchy fog before 7am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 89. South wind 10 to 15 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Mostly clear, with a low around 65. West wind around 10 mph, with gusts as high as 25 mph.
Juneteenth
Mostly sunny, with a high near 83. West wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 82.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 40%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Tuesday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Whippany NJ
 40.8°N 74.4°W (Elev. 177 ft)
4:07 am EDT Jun 17, 2026
9am EDT Jun 17, 2026-6pm EDT Jun 23, 2026
 
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